| Year | Count |
|---|---|
| 1912 | 5 |
| 1914 | 5 |
| 1915 | 10 |
| 1917 | 7 |
| 1918 | 10 |
| 1919 | 7 |
| 1920 | 7 |
| 1921 | 15 |
| 1922 | 9 |
| 1923 | 8 |
| 1924 | 6 |
| 1925 | 8 |
| 1926 | 8 |
| 1927 | 8 |
| 1928 | 8 |
| 1929 | 12 |
| 1930 | 9 |
| 1931 | 9 |
| 1939 | 6 |
| 1940 | 7 |
| 1941 | 9 |
| 1942 | 5 |
| 1943 | 5 |
| 1944 | 7 |
| 1945 | 5 |
| 1946 | 5 |
| 1947 | 45 |
| 1948 | 6 |
| 1949 | 7 |
| 1955 | 18 |
| 1957 | 14 |
| 1959 | 16 |
| 1960 | 10 |
| 1966 | 16 |
| 1967 | 10 |
| 1968 | 16 |
| 1970 | 5 |
| 1971 | 5 |
| 1973 | 5 |
| 1979 | 5 |
| 1982 | 5 |
| 1985 | 8 |
| 1986 | 5 |
| 1989 | 6 |
| 1995 | 5 |